EXAM 5

Question 1

HOW DO YOU SPEED UP THE MIXING PROCESS?

Answer 1

HEAT, STIR, GRIND IT UP

Question 2

HOW DOES HEAT SPEED UP THE MIXING PROCESS?

Answer 2

MORE KINETIC ENERGY = MORE CHANCES TO INTERACT

MORE CHANCES TO ASK IT INTO THE SOLUTION

Question 3

HOW DOES STIRRING HELP SPEED UP THE MIXING PROCESS?

Answer 3

MECHANICALLY MOVING THE MOLECULES TO MAXIMIZE INTERACTIONS, MORE CHANCES TO ASK INTO THE SOLUTION

Question 4

HOW DOES GRINDING IT UP SPEED UP THE MIXING PROCESS?

Answer 4

SMALLER PIECES = MORE AREA

MORE PLACES/CHANCES TO ASK INTO SOLUTION

Question 5

EXAMPLE OF HEATING IT UP:

Answer 5

SUGAR INTO HOT TEA

Question 6

STIRRING EXAMPLE:

Answer 6

SUGAR INTO ICED TEA

Question 7

GRINDING IT UP EXAMPLE:

Answer 7

TABLE SALT AND ROCK SALT

Question 8

IMF’S JUST TELL YOU _____ FOR DISSOLVING

HEAT, STIR, GRIND JUST ______

Answer 8

YES OR NO, SPEED IT UP

Question 9

SATURATED MEANS

Answer 9

MAXIMUM AMOUNT HAS BEEN DISSOLVED

Question 10

UNSATURATED MEANS:

Answer 10

ROOM FOR MORE

Question 11

SUPERSATURATED MEANS:

Answer 11

TOO MUCH SOLUTE FOR THE SOLUTION

Question 12

WHAT IS AN EXAMPLE OF SUPERSATURATED:

Answer 12

PUTTING TOO MUCH SUGAR IN ICE TEA SO NO MATTER HOW MUCH YOU STIR THE SUGAR WON’T DISSOLVE BECAUSE THERE IS TOO MUCH SUGAR

Question 13

SOLN MEANS

Answer 13

SOLUTION

Question 14

ON THE SATURATION CURVE IF YOU ARE ON THE LINE, YOU ARE _____

Answer 14

SATURATED

Question 15

THE HOTTER YOU MAKE IT, THE ______

Answer 15

MORE YOU CAN PUT IN

Question 16

UNDER THE LINE IN THE SATURATION CURVE IS ____

Answer 16

UNSATURATED

Question 17

ABOVE THE LINE IN THE SATURATION CURVE IS :

Answer 17

SUPERSATURATED

Question 18

IN THE SATURATION CURVE WHAT REPRESENTS THE BOTTOM LINE (HORIZON LINE):

Answer 18

TEMPERATURE (IN CELSIUS)

Question 19

WHAT IS THE MASS PERCENT EQUATION:

Answer 19

MASS SOLUTE/MASS SOLUTION X 100

Question 20

HOW WOULD YOU SET UP THIS PROBLEM:

15g NaCl dissolved into the 85g H2O. What is % NaCl

Answer 20

15g NaCl/ 100g soln. x 100

Question 21

WHERE DOES THE 100g SOLN COME FROM IN THIS PROBLEM?

15g NaCl dissolved into the 85g H2O. What is % NaCl

15g NaCl/ 100g soln. x 100

Answer 21

WE HAVE TO ADD THE 15 AND 85 BECAUSE ONE IS THE SOLVENT AND ONE IS THE SOLUTE. IN ORDER TO GET THE SOLUTION WE HAVE TO COMBINE BOTH

Question 22

WHAT IS MOLARITY?

Answer 22

M = MOLES OF SOLUTE/LITER OF SOLUTION

Question 23

WE ALWAYS GET THE MOLE TO MOLE FROM:

Answer 23

EQUATION

Question 24

WHAT IS THE PRODUCT IN THIS EQUATION AND HOW DO WE KNOW?

MgBr2 (aq) + 2AgNO3 (aq) ——-> Mg(NO3)2 (aq) + 2AgBr (s)

Answer 24

the AgBr is the product, we know because in a double replacement a PPT (solid) is always formed

Question 25

When an problem asks you to find how much of something and it is aqueous, what is it asking?

Answer 25

it wants our answer to be in mL

it is asking for how much in mL

Question 26

When you are looking to find how much of something when it is aqueous, we are looking for the answer in mL or L so at the end instead of doing grams/moles, we have to do _____

Answer 26

mL / Moles

Question 27

WHAT DOES DILUTION MEAN:

Answer 27

WATER IT DOWN

MAKE IT LESS CONCENTRATED

SMALLER=DILUTE

Question 28

WHAT IS THE DILUTION EQUATION:

Answer 28

M1V1 = M2V2

Question 29

M1V1 = M2V2

THE M=
V=
1=
2=

Answer 29

M= MOLARITY
V= VOLUME
1= INITIAL (CONCENTRATED)
2= FINAL (DILUTE)

Question 30

IN THIS EXAMPLE WHAT IS THE CONCENTRATED AND WHAT IS THE DILUTED?

How much concentrated 12M HCl do you need to make 60mL of a 0.1M HCl?

Answer 30

the concentrated is the 12M

dilute is 60mL of a 0..1M

Question 31

how do you know which one is the dilute and which one is concentrated?

Answer 31

the smallest is the dilute

Question 32

Arrhenius acid means:

Answer 32

give H+ in solution

Question 33

Arrhenius base means:

Answer 33

give OH- in solution